# Research Publications

Source URL: https://blockstream.com/research-publications
Updated: 2026-11-12T19:54:48.000Z

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*LATEST RESEARCH*

## SHRINCS and OP\_CHECKSHRINCS

Blockstream Research designed SHRINCS, a compact hash-based post-quantum signature scheme optimized for bitcoin and Liquid. We broadcast what we believe were the first transactions on a production bitcoin sidechain authorized using post-quantum signatures (verifying SHRINCS via Simplicity on Liquid mainnet) and authored a draft BIP proposal for OP\_CHECKSHRINCS on bitcoin.

2026

- [Read more](https://eprint.iacr.org/2025/2203.pdf)